ABAP Select data from SAP table WRF_SIT_WRF1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRF_SIT_WRF1 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to WRF_SIT_WRF1. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the WRF_SIT_WRF1 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_WRF_SIT_WRF1 TYPE STANDARD TABLE OF WRF_SIT_WRF1,
      WA_WRF_SIT_WRF1 TYPE WRF_SIT_WRF1,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <WRF_SIT_WRF1> TYPE WRF_SIT_WRF1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WRF_SIT_WRF1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WRF_SIT_WRF1
  INTO TABLE IT_WRF_SIT_WRF1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_SIT_WRF1
*  INTO TABLE @DATA(IT_WRF_SIT_WRF12).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_WRF_SIT_WRF1 INDEX 1 INTO DATA(WA_WRF_SIT_WRF12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WRF_SIT_WRF1 ASSIGNING <WRF_SIT_WRF1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_SIT_WRF1>-MANDT = 1.
<WRF_SIT_WRF1>-LOCNR = 1.
<WRF_SIT_WRF1>-EROED = 1.
<WRF_SIT_WRF1>-SCHLD = 1.
<WRF_SIT_WRF1>-SPDAB = 1.

ENDLOOP.

LOOP AT IT_WRF_SIT_WRF1 INTO WA_WRF_SIT_WRF1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_SIT_WRF1-SPDBI, sy-vline,
  WA_WRF_SIT_WRF1-AUTOB, sy-vline,
  WA_WRF_SIT_WRF1-KOPRO, sy-vline,
  WA_WRF_SIT_WRF1-LAYVR, sy-vline,
  WA_WRF_SIT_WRF1-FLVAR, sy-vline,
  WA_WRF_SIT_WRF1-STFAK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_SIT_WRF1 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_WRF_SIT_WRF1 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_WRF_SIT_WRF1 INTO WA_WRF_SIT_WRF1.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field LOCNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF_SIT_WRF1-LOCNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_SIT_WRF1-LOCNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VERFE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRF_SIT_WRF1-VERFE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_SIT_WRF1-VERFE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WRF_SIT_WRF1_STR, 
MANDT TYPE STRING,
LOCNR TYPE STRING,
EROED TYPE STRING,
SCHLD TYPE STRING,
SPDAB TYPE STRING,
SPDBI TYPE STRING,
AUTOB TYPE STRING,
KOPRO TYPE STRING,
LAYVR TYPE STRING,
FLVAR TYPE STRING,
STFAK TYPE STRING,
WANID TYPE STRING,
MOAB1 TYPE STRING,
MOBI1 TYPE STRING,
MOAB2 TYPE STRING,
MOBI2 TYPE STRING,
DIAB1 TYPE STRING,
DIBI1 TYPE STRING,
DIAB2 TYPE STRING,
DIBI2 TYPE STRING,
MIAB1 TYPE STRING,
MIBI1 TYPE STRING,
MIAB2 TYPE STRING,
MIBI2 TYPE STRING,
DOAB1 TYPE STRING,
DOBI1 TYPE STRING,
DOAB2 TYPE STRING,
DOBI2 TYPE STRING,
FRAB1 TYPE STRING,
FRBI1 TYPE STRING,
FRAB2 TYPE STRING,
FRBI2 TYPE STRING,
SAAB1 TYPE STRING,
SABI1 TYPE STRING,
SAAB2 TYPE STRING,
SABI2 TYPE STRING,
SOAB1 TYPE STRING,
SOBI1 TYPE STRING,
SOAB2 TYPE STRING,
SOBI2 TYPE STRING,
VERFL TYPE STRING,
VERFE TYPE STRING,
SPGR1 TYPE STRING,
INPRO TYPE STRING,
EKOAR TYPE STRING,
KZLIK TYPE STRING,
BETRP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
NLMATFB TYPE STRING,
BWWRK TYPE STRING,
BWVKO TYPE STRING,
BWVTW TYPE STRING,
BBPRO TYPE STRING,
VKBUR_WRK TYPE STRING,
VLFKZ TYPE STRING,
LSTFL TYPE STRING,
LIGRD TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
DESROI TYPE STRING,
TIMINC TYPE STRING,
POSWS TYPE STRING,
SSOPT_PRO TYPE STRING,
WBPRO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_SIT_WRF1_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_WRF_SIT_WRF1_STR-MANDT sy-vline 
WA_WRF_SIT_WRF1_STR-LOCNR sy-vline 
WA_WRF_SIT_WRF1_STR-EROED sy-vline 
WA_WRF_SIT_WRF1_STR-SCHLD sy-vline 
WA_WRF_SIT_WRF1_STR-SPDAB sy-vline 
WA_WRF_SIT_WRF1_STR-SPDBI sy-vline 
WA_WRF_SIT_WRF1_STR-AUTOB sy-vline 
WA_WRF_SIT_WRF1_STR-KOPRO sy-vline 
WA_WRF_SIT_WRF1_STR-LAYVR sy-vline 
WA_WRF_SIT_WRF1_STR-FLVAR sy-vline 
WA_WRF_SIT_WRF1_STR-STFAK sy-vline 
WA_WRF_SIT_WRF1_STR-WANID sy-vline 
WA_WRF_SIT_WRF1_STR-MOAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-MOBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-MOAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-MOBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-DIAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-DIBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-DIAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-DIBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-MIAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-MIBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-MIAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-MIBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-DOAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-DOBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-DOAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-DOBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-FRAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-FRBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-FRAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-FRBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-SAAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-SABI1 sy-vline 
WA_WRF_SIT_WRF1_STR-SAAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-SABI2 sy-vline 
WA_WRF_SIT_WRF1_STR-SOAB1 sy-vline 
WA_WRF_SIT_WRF1_STR-SOBI1 sy-vline 
WA_WRF_SIT_WRF1_STR-SOAB2 sy-vline 
WA_WRF_SIT_WRF1_STR-SOBI2 sy-vline 
WA_WRF_SIT_WRF1_STR-VERFL sy-vline 
WA_WRF_SIT_WRF1_STR-VERFE sy-vline 
WA_WRF_SIT_WRF1_STR-SPGR1 sy-vline 
WA_WRF_SIT_WRF1_STR-INPRO sy-vline 
WA_WRF_SIT_WRF1_STR-EKOAR sy-vline 
WA_WRF_SIT_WRF1_STR-KZLIK sy-vline 
WA_WRF_SIT_WRF1_STR-BETRP sy-vline 
WA_WRF_SIT_WRF1_STR-ERDAT sy-vline 
WA_WRF_SIT_WRF1_STR-ERNAM sy-vline 
WA_WRF_SIT_WRF1_STR-NLMATFB sy-vline 
WA_WRF_SIT_WRF1_STR-BWWRK sy-vline 
WA_WRF_SIT_WRF1_STR-BWVKO sy-vline 
WA_WRF_SIT_WRF1_STR-BWVTW sy-vline 
WA_WRF_SIT_WRF1_STR-BBPRO sy-vline 
WA_WRF_SIT_WRF1_STR-VKBUR_WRK sy-vline 
WA_WRF_SIT_WRF1_STR-VLFKZ sy-vline 
WA_WRF_SIT_WRF1_STR-LSTFL sy-vline 
WA_WRF_SIT_WRF1_STR-LIGRD sy-vline 
WA_WRF_SIT_WRF1_STR-VKORG sy-vline 
WA_WRF_SIT_WRF1_STR-VTWEG sy-vline 
WA_WRF_SIT_WRF1_STR-DESROI sy-vline 
WA_WRF_SIT_WRF1_STR-TIMINC sy-vline 
WA_WRF_SIT_WRF1_STR-POSWS sy-vline 
WA_WRF_SIT_WRF1_STR-SSOPT_PRO sy-vline 
WA_WRF_SIT_WRF1_STR-WBPRO sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.